Wow, what a difference!
We have a 60-year-old fishing cabin on the banks of the Roaring Fork River near Aspen, Colorado. We had a struggle with mice, no matter how hard we worked to plug up entry holes, and I was really sick of cleaning up after live mice and disposing of dead mice that we poisoned.
Finally I tried the Good Life electric repeller [Ultimate AT], and wow, what a difference! Not even a sign of mice, or mice poop or mice pee. They cleared right out. Why anybody would fool with messy traps or poison is a mystery when this is such a clean, humane solution.